JPS6388311A - Mounting structure of part made of synthetic resin - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is applied to synthetic resin parts that are applied when tightening bolts to a plurality of nuts inserted into a synthetic resin part through a collar equipped with a rubber damper. This relates to the mounting structure of manufactured parts.

(Background of the Invention) A nut is inserted into a synthetic resin component such as a polyethylene fuel tank, and a bolt is tightened by pinching the collar that comes into contact with the nut. Parts may be installed.

In this case, the tightening torque of the bolt is applied directly to the nut via the collar. For this reason, in addition to the force in the tension direction of the bolt, the inserted nut is subject to a force that rotates the nut, which causes problems such as the nut rotating with the bolt or easily coming off from the synthetic resin parts. .

(Objective of the Invention) The present invention has been made in view of the above circumstances, and is intended to prevent the tightening torque of the bolt from being directly applied to the inserted nut, and to prevent the nut from rotating together with the bolt or coming off. The purpose of the present invention is to provide a mounting structure for synthetic resin parts that can prevent the above problems.

(Structure of the Invention) According to the present invention, this object is achieved by providing a mounting structure for a synthetic resin component in which a plurality of nuts inserted into the synthetic resin component are each tightened with a bolt by sandwiching a collar equipped with a rubber damper. This is achieved by a structure for attaching synthetic resin parts, which is characterized by interposing a common washer that abuts one end surface of a plurality of collars and into which each bolt is inserted.

(Embodiment) Fig. 1 is a partially sectional side view of one embodiment of the present invention, and Fig. 2 is a partially sectional side view of an embodiment of the present invention.
．． Figure 3.4 is the II-II line in Figure 1.

5 is a side view of the vehicle body frame, and FIG. 6 is a side view of a two-wheeled motor vehicle for traveling on rough terrain to which this embodiment is applied.

In Fig. 5.6, the reference numeral 10 denotes a diamond-shaped vehicle body frame, which includes a steering shaft tube 12, a main tube 14 and a down tube 16 extending obliquely downward and rearward from the steering shaft tube 12, and the rear end of the main tube 14. A pair of left and right seat rails 20 (only one shown) extends rearward from the top of each vertical tube 18;
A pair of left and right back tubes 22 (only one shown) extending diagonally downward and rearward from the bottom to support the seat rail 20 is given a value of 1. In addition, the main tube 14 and down tube 16
A reinforcing tube 24 is passed between the reinforcing tubes 24 and a reinforcing plate 26 extending from the front of the reinforcing tube 24 to the steering shaft cylinder 12.
(26a, 26b) are fixed (see Figure 3).

Further, a rearwardly open bracket 28 is fixed near the front ends of the left and right seat rails 20, and a pair of left and right tank fixing plates 30 (30a, 30b,
(see Figure 2) is erected.

In Fig. 6, 32 is the front fork, 34 is the front wheel, and 36 is the front fork.
is the steering handlebar, 38 is the engine, 40 is the carburetor,
42 is an air cleaner.

Reference numeral 44 denotes a rear arm supported by a pivot shaft 46 so as to be able to swing up and down, 48 a rear wheel mounted on this rear arm 44, 50 a shock absorber supporting this rear arm 44, and 52 a battery; is the exhaust muffler.

56 is a polyethylene fuel tank made by rotational molding or blow molding, and the main tube 1
It can be installed across 4. A straddle-type driver's seat 58 that is long in the front-rear direction is attached to the rear of the fuel tank 56 so as to be continuous. Here, the front portion of the driver's seat 58 is fixed to the vehicle body frame 10 by engaging the tongue portion 58b integrally formed on the seat bottom plate 58a (FIG. 1) into the bracket lift 28 from the rear.

As shown in FIG. 1, the fuel tank 56 is fixed at its rear part to the vehicle body frame 10, and its front part is held by the vehicle body frame L10 so as to be movable in the longitudinal direction. Next, the support structure will be explained.

A pair of left and right nuts 60 (only one is shown, see FIG. 2) are inserted into the rear part of the fuel tank 56. These oaks) 60 have the same color as the collar 62 (only one shown).
・Sandwich the plate-shaped washers 64 and por l-66 (66a,
66b) is screwed in. Annular rubber dampers 68 (68a, 68b) are attached to the outer periphery of these collars 62, and the outer periphery of these rubber dampers 68 is attached to the tank fixing plate 30 (3).
0a, 30b). Furthermore, the fuel tank 56
The bottom of the rear part is equipped with a plate-shaped rubber damper 7 as shown in Figure 1.
0 to the bracket 28.

Further, as shown in FIG. 3, two nuts 72 (only one is shown) are inserted in the left and right bottoms of the front part of the fuel tank 56, respectively, and these nuts 72 have a nut 72 that hangs down opposite to the reinforcing plate 26. Bracket plate 74 (74a, 7
4b) is fixed. Elongated holes 76 that are long in the front and back direction are formed in these bracket plates 74 (Fig. 1), and annular rubber dampers 80 (80a, 80b) are inserted into each of these elongated holes 76.
) is inserted. The rubber damper 80 is connected to the reinforcing plate 26 by a port 86 via a collar 82 and a washer 84.
is fixed.

Note that side covers 88 (only one side is shown, see FIG. 1.4) are attached to the left and right sides of the fuel tank 56. That is, the rear upper part and the front lower part of the side cover 88 are each bolted to nuts 90 and 92 (FIG. 4) inserted into the fuel tank 56.

According to this embodiment, when the rear part of the fuel tank 56 is attached to the tank fixing plate 30 of the vehicle body frame 10, two bolts 66 are inserted through the plate-shaped washer 64 and the collar 62, and preliminarily screwed into the respective nuts 60. entered. After that, each bolt 66 is fully tightened. The rotational torque of the bolt 66 is transmitted to the plate washer 64 by friction between the head of the bolt 66 and the plate washer 64, but the plate washer 68 is engaged with two poles 66a and 66b. Therefore, the plate washer 68 does not rotate. Therefore, the bolt 66 is attached to the collar 62.
The rotational torque is not transmitted to the nut 60, and no large rotational torque is transmitted to the nut 60 either. (i.e. Nara) 60, Natsu 6
Only a small amount of rotational torque is applied due to the frictional force between the threads of the bolt 66 and the bolt 66. This prevents the nut 60 from rotating together with the bolt 66 or from coming out of the fuel tank 56.

In the above embodiment, the washer 64 is interposed between the head of the bolt 66 and the collar 62, but the present invention also includes an arrangement in which a common washer is interposed between the nut 60 and the collar 62. include.

(Effects of the Invention) As described above, the present invention provides a method for tightening bolts to a plurality of nuts inserted in a synthetic resin part through a collar equipped with a rubber damper, by attaching a common plate to one end face of each collar. Since the washer is interposed, even if the tightening torque of the bolt is applied to this common washer directly or through the collar, this washer will not rotate, and therefore no rotational torque will be transmitted to the collar. Therefore, the rotational torque applied to the nut does not become excessive, and the nut does not rotate together with the bolt or come off.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional side view of one embodiment of the present invention, and FIG.
．． 3.4 is a cross-sectional view taken along lines II-II, ■-m, and IV-IV in FIG. 1, FIG. 5 is a side view of the vehicle body frame, and FIG. FIG. 2 is a side view of a two-wheeled motor vehicle for road clearing. 56...Fuel tank as a synthetic resin part, 60.
...Insert nut, 62...Collar, 64...One common washer, 66...Bolt, 68...Rubber damper.

Claims (1)

[Scope of Claims] A mounting structure for a synthetic resin component in which a plurality of nuts inserted into the synthetic resin component sandwich a collar on which a rubber damper is attached and tighten bolts respectively, wherein the bolts are tightened respectively by a plurality of nuts inserted into the synthetic resin component, wherein the bolts are tightened, respectively. A mounting structure for synthetic resin parts characterized by interposing a common washer into which each bolt is inserted.